Xinfengxiang people are committed to taking the road of low-carbon economy and building an ecological and civilized enterprise. Through the introduction, digestion, absorption and re-innovation, the integrated innovation technology development strategy has been implemented, and the "Xiangguang Ecological Copper Smelting Method" based on "double flash" and with independent intellectual property rights as the core has been formed. The main technological processes are as follows: batching in silo → steam drying of copper concentrate → flash smelting (waste heat recovery) → dressing of flash smelting slag → water quenching of environmental protection matte → flash smelting (waste heat recovery) → pyrometallurgical refining of crude copper without oxidation and reduction (waste heat recovery) → energy-saving and efficient enhanced electrolysis → recovery of precious metals in Kaldor furnace → washing with dilute acid by flue gas dynamic wave, and acid production with two conversions and two absorption of high concentration SO2 (medium temperature waste heat recovery). → "Xiangguang Green Ecological Copper Smelting Method" has the following three advantages: First, environmental protection. Through closed smelting and high-concentration sulfur dioxide conversion technology, the total recovery rate of sulfur reaches over 98%, the curing rate reaches 99.9%, and the sulfur dioxide concentration of tail gas is less than 80ppm, which is 720 tons less than the national emission standard every year. Second, the advantages of energy saving. Through autothermal smelting and waste heat recovery to generate electricity, the comprehensive energy consumption per ton of cathode copper is lower than 340 kg of standard coal, which is lower than the national copper industry access standard by%, and can save 1 10,000 tons of standard coal every year; Third, it has the advantage of high efficiency. Through the mode of high investment and high operation rate, 1 flash converter replaces 6 PS converters, and the single series production capacity has reached the largest in the world at present. At present, Xiangguang Copper has realized the comprehensive utilization of reclaimed water, acid production from tail gas recovery and further copper extraction from tailings, and truly realized clean production, circular economy and ecological copper smelting.
Qiu and Zhang Wenhai, academicians of China Academy of Engineering, assessed that Xiangguang Copper has advanced technology, high production efficiency and good environmental protection effect. All technical indicators are better than the design value, and the overall technology has reached the international leading level. On June 30th, 2008, 12, more than 100 well-known experts from 25 countries who participated in the 12 international flash smelting technology exchange meeting in Shanghai visited Xiangguang copper industry by chartered plane, and spoke highly of Xiangguang's copper smelting enterprise which has been established for 50 years. Kang Yi, former president of China Nonferrous Metals Industry Association, pointed out that the "double flash" technology of Xiangguang copper industry has filled a gap in the domestic copper industry, which has made China's copper metallurgical technology step up to a new level and marked the full bloom of the "double flash" copper smelting technology with international advanced level in China. Qu, the former director of the State Environmental Protection Administration, pointed out during his inspection of Xiangguang that Xiangguang set a model of win-win for economy and environment.
With a series of unique advantages of "Xiangguang Ecological Copper Smelting Law", Xiangguang Copper has become an AAA-level credit enterprise in the national non-ferrous metal industry, and has been listed as one of the seven enterprises that meet the "access conditions for copper smelting industry" by the National Development and Reform Commission. It was rated as "National Environmental Friendly Project" by the Ministry of Environmental Protection, which is the only one in the history of non-ferrous metal industry; It is listed as one of the seven copper concentrate processing trade enterprises approved by the Ministry of Commerce and the General Administration of Customs; It was jointly evaluated by the Ministry of Industry and Information Technology, the Ministry of Science and Technology and the Ministry of Finance as the first batch of "resource-saving and environment-friendly pilot enterprises". At present, the company has more than 20 patented technologies with independent intellectual property rights, two scientific research achievements won the first prize of China Nonferrous Metals Industry Science and Technology, and one scientific research achievement won the first prize of Shandong Science and Technology Progress Award, which was recognized as a high-tech enterprise by Shandong Science and Technology Department, Finance Department, State Taxation Bureau and Local Taxation Bureau. "Xiangguang" brand high-purity cathode copper was successfully registered in Shanghai Futures Exchange, with stable quality and high market awareness. The company's ISO 900/KOOC-0/quality management system, ISO/KOOC-0/400/KOOC-0/environmental management system, OHSAS/KOOC-0/800/KOOC-0/occupational health and safety management system and GB/T2333/KOOC-0/energy management system have all passed the national authority certification.